The process of introducing carbon into steel or iron to harden it; the American spelling of carburisation.
From carburize + -ation (American suffix convention). Ultimately from carbon + -ize (American '-ize' suffix).
Carburization transformed manufacturing—suddenly you could make gears that wouldn't wear down, tools that held edges longer, and equipment that was strong but not brittle. It's the reason the Industrial Revolution could actually work.
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